Tata Steel on Sunday carried out the demolition of two aging coke manufacturing facilities at Jamshedpur Works, making way for a new coke oven battery with the latest technology and higher efficiency.
In a statement, the company said that in a world-first engineered process, Tata Steel carried out an explosion at its operating steel mill with India’s tallest factory mega structure. Today’s explosion marked the completion of the demolition process of the dilapidated high-rise facility at the coke factory at Jamshedpur Works.
Tata Steel replaced its coke oven batteries 5, 6 and 7 (combined capacity of one million tonnes per year) with new batteries 6A and 6B (combined capacity of one mtpa), with the latest technology and higher energy efficiency, he said.
The model workshop’s first 12 meter high blast was performed on September 4, to establish safe operating procedures within the operational plant, and on November 27, the company executed a 110 meter high detonated chimney blast.
Today, a 110-meter-high concrete chimney, along with a 48-meter-high coal tower was dismantled as planned in a safe and environmentally sound manner, the company said. The blasts were carried out with the help of contract partner Edifice Engineering India, and supported by Jet Demolition South Africa.
Outlining the process, says Tata Steel, the controlled explosion of the 110-metre-high chimney was accomplished using a mechanical hinge, allowing the structure to fall in one direction with zero degree deviation. ‘Water curtains’ are used to control dust and ‘moats with dykes’ are used to absorb vibrations. In addition, the use of ‘Steel wires mesh’ prevents debris from being scattered.
The concrete debris generated from the explosion will be recycled and used in ordinary cement concrete (PCC), wall and road construction, said Tata Steel. Drones were deployed to increase visibility and help identify hazards by reaching inaccessible areas and to survey surrounding areas during explosions.
Sanjiv Paul, vice president (safety, health & sustainability), Tata Steel, said, “We have completed an important step towards a safe and controlled explosion of an obsolete Coke Plant facility. It is a testament to our commitment to operational efficiency, safety, resource optimization and a strategy for sustainable growth.”
Avneesh Gupta, Vice President (TQM and Engineering & Projects), Tata Steel, said, “Tata Steel strives to be a technology and innovation leader in the steel industry, leveraging internal capabilities and building external ecosystems. And, the successful execution of this complex explosion demonstrates our superior engineering capabilities.”
Tata Steel’s flagship Jamshedpur factory, one might say, was one of the first steel mills in Asia. The company says it is the only facility in India that has produced steel at the same location continuously for more than 100 years.